求数学建模解题过程程

求解答过程:故事屋。 路_百度知道
求解答过程:故事屋。 路
  清晨,妈妈把我从暖烘烘的被窝里拉起来:“小功,你姥姥病了,快叫你舅舅来!”   舅舅住在离我家3里多的小村里,为了赶时间,我顾不得穿戴整齐就出了门。出门没几步,就到了农贸市场。这里的商品丰富极了,有银光闪闪的带鱼、肥壮的公鸡和母鸡,还有鲜嫩的蔬菜。顾客很多,熙(xī)熙攘(rǎng)攘。   我正赶着路,突然看见了一位老奶奶提着沉甸甸的菜篮子一步三颤地走着。我忙上前帮她提篮子,一步一步地扶着她回家。老奶奶感激地说:“谢谢你哆!”我说:“没关系。”时间已经6点了,我赶紧奔跑起来。由于心急,我竟和一辆自行车相撞。骑自行车的哥哥没有责怪我,反而说:“小朋友,看样子你有什么急事。快上车吧,我送你去。” 1.照样子,写词语。 暖烘烘 _________ _________ _________ _________ 2.写出表示“手”和“脚”的动作的词语。 表示“手”的动词如:扶 ____ ____ ____ ____ 表示“脚”的动词如:跑 ____ ____ ____ ____ 3.写出和“清晨”以及“赶紧”意思相近的词。 “清晨”:的近义词:(  )(  )(  ) “赶紧”:的近义词:(  )(  )(  ) 4.本文写了“我”在路中________和________这两件事,反映了人们之间________的新风尚。
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1.喜洋洋 美滋滋 白花花 绿油油 2.提 拎 捉 抱 踢 跳 蹦 跌 3.早晨 早上 清早 赶忙 急忙 赶快 4.帮老奶奶提篮子 骑自行车的哥哥帮我 相互帮助
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出门在外也不愁求解答过程:于是,政府通过电视和_百度知道
1.居民们四处寻找冻僵的燕子。(意思对即可)&&& 2.纷纷&&& 四处 && “纷纷”表明了参加救援燕子的居民之多;“四处”指寻找燕子的范围之广。我体会到了瑞士人对动物博大的爱。(意思对即可)&&& 3.踏着冻得坚硬的山路,贝蒂爬上了一个小冈。这时,她惊喜地发现一棵大树旁有一只活着的燕子,在雪地里无力地扇动着翅膀,发出微弱的叫声。贝蒂连忙跑过去,蹲下身子,轻轻地捧起燕子,放到自己的嘴边,不停地朝它呵着热气。燕子感受到了一丝温暖,扬起脑袋,叽叽地叫着,好像在说:“谢谢你,小姑娘。”(答案不唯一)
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出门在外也不愁求解答过程:阅读理解。_百度知道
求解答过程:阅读理解。
阅读理解。
&&&&&&&& Jackie Chan was born on Apirl 7, 1954, in Hongkong,China. His parents left mainland China for Hong
Kong a short time before he was born. His parents named him "Chang Kongsang", which means "born in Hong
Kong". They wanted to celebrate a safe trip to HongKong.
&&&&&&&& At first, Jackie's family lived in the French Embassy (大使馆). His father was a cook, and his mother a
housekeeper. When Jackie was seven years old, his family moved to Australia. His father got a job in the
American Embassy. Later, back in Hong Kong Jackie's father sent him to the China Drama Academy. Jackie studied and worked 19 hours a day. The students practised KungFu and learned how to do many stunts (特技 表演) there.
&&&&&&&& When Jackie was seventeen years old, he began to do dangerous stunts for films. In the early 1980s,
Jackie went to Hollywood, but he wasn't very successful. He went on to make films in HongKong and had
great success. Finally, in 1995, Jackie Chan has both Chinese and American fans ,and his films make millions
of dollars.
1. When did Jackie Chan's parents move to Hong Kong?
A. They moved to Hong Kong a short time after Jackie Chan was born.
B. They moved to Hong Kong a short time before Jackie Chan was born.
C. They moved to Hong Kong after they came back from America.
2. What did Jackie Chan learn in the China Drama Academy?
B. Dancing
C. Kong Fu and stunts
3. Which is true according to the passage?
A. Jackie Chan is about forty years old.
B. He wasn't very successful when he first went to Hollywood.
C. He became famous at the age of 17.
4. Which is true according to the passage?
A. Jackie Chan is about forty years old.
B. He wasn't very successful when he first went to Hollywood.
C. He became famous at the age of 17.
5. We can learn from the article that _____.
A. Jackie Chan's mother was also born in Hong Kong.
B. At first, Jackie's family lived in France.
C. the time when his family moved to Australia was around 1961.
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出门在外也不愁求解答过程:青少年要做一个好公民_百度知道
求解答过程:青少年要做一个好公民
青少年要做一个好公民,就要增强公民意识。公民意识主要包括
①树立国家观念 ②公民道德意识 ③民主意识 ④法律意识
A、①②③ B、②③④ C、①②④ D、①②③④
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出门在外也不愁一道数学题:求解题步骤_百度知道
一道数学题:求解题步骤
小张步行从甲单位去乙单位开会,30分钟后小李发现小张遗漏了一份文件,随即开车去给小张送文件,小李出发3分钟后追上小张,此时小张还有1/6路程未走完,如果小李出发后直接开车到乙单位等小张,需要等几分钟?(  )
A.6  B.7  C.8   D.9请说明解题过程!
提问者采纳
从过程来看,开车走5/6路程要3分,每份要3÷5=0.6分,开车直接开车到乙单位共要3.6分小张走5/6路程要33分,走完5分要33÷5=6.6分。从甲到乙共要39.6分,39.6-30-3.6=6分。希望对你有帮助。
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设路程为单位1小张速度为:(1-1/6)÷(30+3)=5/198单位/分小李速度为:(1-1/6)÷3=5/18单位/分小李出发到乙单位用时:1÷(5/18)=3.6分小张出发到乙单位用时:1÷(5/198)=39.6分小李需要等的时间:39.6-30-3.6=6分钟选择A
33乘以五分之六等于39.6 小张用的时间3乘以五分之六等于3.6
再加上30 小李用的时间39.6-33.6=6答案选A
分析:(1)将A的坐标代入反比例解析式中求出k的值,确定出反比例解析式,将B的坐标代入反比例解析式中,求出mn的值,三角形ABD的面积由BD为底边,AE为高,利用三角形面积公式来求,由B的坐标得到BD=m,由AC-EC表示出AE,由已知的面积,利用面积公式列出关系式,将mn的值代入,求出m的值,进而确定出n的值,即可得到B的坐标;
(2)假设四边形ABCD为平行四边形,利用平行四边形的性质得到BD与AC互相平分,得到E为AC的中点,E为BD的中点,由A的坐标求出E的坐标,进而确定出B的坐标,将B坐标代入反比例解析式检验,B在反比例图象上,故假设正确,四边形ABCD能为平行四边形;
(3)由由AC=BD,得到A的纵坐标与B的横坐标相等,确定出B的横坐标,将B横坐标代入反比例解析式中求出B的纵坐标,得到B的坐标,进而确定...
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